The Therm-a-Rest Mondo King 3D 8482 is Therm-a-Rest s largest mattress in their Camp & Comfort range it uses three-dimensional construction to maximise sleeping surface & deliver the best in comfort ideal for car camping & family camping This Therm-a-Rest mat offers extra width & length as it is the XXL size it has generous 10cm thickness & vertical side walls that maximise useable sleep surface & the foam core delivers all season warmth to give you the comfort of home & a great night s rest wherever you might go With dual valves this self inflating mat will simply inflate on its own just add a couple of extra breaths of air to personalise the firmness of this mat & you are ready to get a really good night s rest & to wake up refreshed & ready to go